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Forum: Plumbing Systems and Fixtures

11-02-2016, 14:32

Replies: 47

Stick-on Holding Tank Level Sensor

Views: 12,355

Posted By Holding Tank

Re: Stick-on Holding Tank Level Sensor

Friends; ... the holding tank radar can be made smaller than a pack of cards and the cost can be less than $50 in parts. Modern chips are amazing, and are being made in quantities because of...

Forum: Plumbing Systems and Fixtures

11-02-2016, 12:33

Replies: 47

Stick-on Holding Tank Level Sensor

Views: 12,355

Posted By Holding Tank

Re: Stick-on Holding Tank Level Sensor

Greetings; Thanks for the input.
Radar is the size of a pack of playing cards.
Looks down through the plastic top of the tank.
Battery lasts more than 1 year. (mostly sleeping; wakes up to take a...

Forum: Plumbing Systems and Fixtures

06-02-2016, 12:54

Replies: 47

Stick-on Holding Tank Level Sensor

Views: 12,355

Posted By Holding Tank

Re: STICK-ON HOLDING TANK LEVEL SENSOR

Pete; Thanks! You have lots of good ideas. I guess the real advantage of my idea is ease of installation. Just stick it to the top. It sees through plastic top. It is not bothered by "gunk" build...

Forum: Plumbing Systems and Fixtures

05-02-2016, 11:31

Replies: 47

Stick-on Holding Tank Level Sensor

Views: 12,355

Posted By Holding Tank

Re: STICK-ON HOLDING TANK LEVEL SENSOR

As an old radar scientist, I know I can do it. (and cheaply). Based on advice, it seems that the smartphone app should tell you if the battery is getting low. Remember, it is not a safety issue where...

Forum: Plumbing Systems and Fixtures

05-02-2016, 11:26

Replies: 47

Stick-on Holding Tank Level Sensor

Views: 12,355

Posted By Holding Tank

Re: STICK-ON HOLDING TANK LEVEL SENSOR

Thanks for the comments. I know that positive and negative advice is ALL valuable. Lessons learned are the key.

Forum: Plumbing Systems and Fixtures

05-02-2016, 09:42

Replies: 47

Stick-on Holding Tank Level Sensor

Views: 12,355

Posted By Holding Tank

Stick-on Holding Tank Level Sensor

HOLDING TANK LEVEL SENSOR; As a hobby (I am a retired radar scientist), I am trying to invent a radar based stick-on battery powered (1 yr) holding tank level sensor with a Bluetooth smartphone...

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